>>7014
going into more extreme territories like body mutation or just simple BDSM/bondage, to justify how a couple could live with the guy's dick inside the girl's mouth indefinitely:
<bondage version (a.k.a. possible in real life):
>there is a chain connecting the girl's tongue piercing to the guy's cock piercing, pulling her mouth always close to his dick, giving them no other choice but for the girl to suck his dick, or for the guy to fuck her mouth
>for extra coercion on either/both sides, the girl's hands are chained to the guy's hip, and the guy's hands are chained to the girl's neck, functioning as handlebars for blowjob/facefuck
by default they would be a couple; but alternatively, making them strangers would introduce an entire different taste of a woman being forced to perform oral sex on an unfamiliar man, and the awkwardness of a man who receive head from a random woman he just met, both of them forced together in this circumstance
(or for incestfags, making them family members who are at best reluctant and at worst abhor at the thought of incest, now being forced to perform/receive oral sex)
or, flip the dynamics and has the guy unable to control his lust, ramming his dick in the girl's mouth & throat, much to her horror of being orally raped by a stranger
<body modification/transmorphism/mutation, or just plain superatural version:
>the girl loses her gag reflex & her incisors (so she can't gag nor accidentally bite), but gains a way to breathe without her throat (example, respiration via skin, like MGS:V's Quiet), and a G-spot in her throat
>the guy now has a penile bone (baculum) that erects his dick even in refractory period - a very short refractory period by the way, and his semen production is off the chart, to the point the girl could even survive on his cum alone
>for added supernatural element, if they are physically close enough to each others, the girl's mouth & the guy's dick would magically gravitate toward each others with significant force, often creating awkward situations if it happens in public
the nuance of this version with them as strangers is that, they would discover each other to be the perfect (oral) sex partners, seemingly being made for each other, in spite of- nah, precisely because of their weird mutations
even if their life together after encounter turbulence, haha no, back to oral sex bonding